兽类学报2025，Vol.45Issue(5)：694-706,13.DOI:10.16829/j.slxb.150938
涠洲岛海域布氏鲸种群数量及体表伤痕评估
Assessment of the population size and body scarring of Bryde's whales in the coastal waters off Weizhou Island,China
摘要
Abstract
The Bryde's whale(Balaenoptera edeni)is a Class I key protected species in China,and recent surveys have shown the existence of a stable population in the waters off Weizhou Island in Beibu Gulf,which is currently the only sta-ble population of large baleen whales near the coast of China's mainland.Our team conducted a photo-identification study in the waters near Weizhou Island from March 2018 to February 2023 and obtained a total of 70 600 pictures.Among them,we recorded 44 724 clear pictures of Bryde's whales and identified 59 individual Bryde's whales by dor-sal fin notching.However,the individual identification database curve has not yet reached a plateau,and new individu-als are still being identified every year.The POPAN model was used to estimate the population size of Bryde's whales on Weizhou Island to be 89 individuals(CV=0.14,95％CI=59-123).The average annual recapture rate of the Bryde's whale population in the waters of Weizhou Island during 2018-2023 was 35.8％,and the results of multi-year comparisons showed that 29 individuals(49.2％of the total)had a higher level of habitat fidelity.Based on body sur-face injuries,the main injuries were identified as coming from entanglement in net gear and ship strikes.The estimated minimum injury rate for Bryde's whales in the Weizhou waters during the period 2021-2023 was 26.3％(n=59,95％CI=13.3％-39.3％),and the maximum injury rate was 61.4％(95％CI=51.0％-71.8％),suggesting that there is a clear risk of anthropogenic coercion to Bryde's whales in the Weizhou waters.We call for further strengthen-ing the monitoring and research on the population of Bryde's whales in the waters of Weizhou Island,as well as the strict implementation of various types of anthropogenic controls to mitigate the threats to the survival of their population.关键词
布氏鲸/涠洲岛/栖息地忠诚度/种群数量估算/受伤率Key words
Bryde's whale(Balaenoptera edeni)/Weizhou Island/Site fidelity/Population size estimation/Injury rate分类
生物科学引用本文复制引用
孙晓冬,张瑶瑶,农志文,郑洋,陈默,郑劲松,王丁,梅志刚..涠洲岛海域布氏鲸种群数量及体表伤痕评估[J].兽类学报,2025,45(5):694-706,13.基金项目
中国科学院水生生物研究所自主部署重点研究项目(E055010401) （E055010401）
质兰项目(2021040541B) （2021040541B）
